138002159 has 4 divisors (see below), whose sum is σ = 138039840. Its totient is φ = 137964480.

The previous prime is 138002147. The next prime is 138002197. The reversal of 138002159 is 951200831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138002159 is a prime.

It is a super-2 number, since 2×138002159² = 38089191777322562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138002129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12674 + ... + 20895.

It is an arithmetic number, because the mean of its divisors is an integer number (34509960).

Almost surely, 2^138002159 is an apocalyptic number.

138002159 is a deficient number, since it is larger than the sum of its proper divisors (37681).

138002159 is an equidigital number, since it uses as much as digits as its factorization.

138002159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37680.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 138002159 is about 11747.4320172538. The cubic root of 138002159 is about 516.7676201389.

The spelling of 138002159 in words is "one hundred thirty-eight million, two thousand, one hundred fifty-nine".